First, that's the usual "Huh?".

And second, that's the "Huh?" when she's in a bad mood.

Lastly, that's the "Huh?" when she's in a good mood.

It's like an automatic response. It often comes out when she's not paying attention.

Especially when she's with me.

The "Huh?" is drawn out a little longer, as if she's trying to sound menacing.

She's glaring at the other person with all her might, trying to intimidate them.

She's happy to receive a gift, but doesn't want to appear careless or want to maintain her authority. It's the "Huh?" that comes out often, with a feeling of "I'm not particularly happy, but what's this?".

She may act cold, but when she's alone, she starts to feel really happy.

Aren't they all the same?

This is why amateurs are no good!

That includes you, Aya!

I'm the only one who knows

I'm the only one who knows!

I'm the only one who knows

"To cool off"... here?

I don't think the temperature of the underworld is that different from the surface world.

Oh, very different actually, since there are a lot of chilly yuurei here, right?

There aren't many like that now.

It's still cooler than the world above.

Are you sure it's not a placebo?

Fuh! I'm trying so hard to distract myself from the heat, so why do you always cut me down so sharply when I don't even want you to...!

Wh- What!?

Why are you taking out your anger on others when it's the heat that's to blame!?

Hmm?

You're half human and half ghost, so your body temperature is pretty low! Oh, you should have told me sooner~